Chables h



(No Model.)

AC. MILLE-R.

GRANK ATTACHMENT..

No. 264,467. Patented sept. v19, 1882.

UNITED' STATES APATENT OFFICE.

CHARLES H.' MILLER, OF ERIE,APENNSYLVANIA, ASSIGNOR TO F. F. ADAMS & CO., (LIMITED,) OF SAME PLACE.

CRAN K ATTACH MY'ENT.

SPECIFICATION forming part of Letters Patent No. 264,467, dated September 19, 1882.

Application iled April 26, 1882.

To all whom it may concern: Y y

Be it known .that I, CHARLEs H. MILLER, a citizen of the United States, residing at Erie, in the county of Erie land State of Pennsyl- 5 vania, have invented new and useful Improvements in Crank Attachments; and I do hereby declare that the following is a full, clear, and, exact description thereof, reference being had to the accompanying drawings and the :io letters or gures of reference marked thereon. This invention relates to the attachment of cranks to shafts; and it consists in providing means for attaching a crank which has a slotted head'for the purpose of making its length r 5 adjustable. g

The object of this invention is to provide an attachment for such a crank which will hold it strongly and firmly, and at the same time make it easy of adjustment.

My device is shown in the accompanying drawings as follows:

Figure l is a perspective view of my device as applied to use. Fig. 2 is a vertical section through the same longitudinally. Fig. 3 is a z5 horizontal section through the same longitudinally. Fig. 4 is a detail of the part C.

The construction is as follows :v A is the shaft; B, the crank, and B the slotted head of the crank. C and D are flanged 3o clamping-plates, which tit onto the shaft like washers. E is the clamping-nut. F is a pin passing transversely through the shaft. f is a groove on-the back face of the plate C, and serves as a notch for the pin F to set in. o c 35 are the flanges on the plate C, and d d are Ilanges onthe plate D.

The crank head B lies between the two plates C and D, and the flanges o-o and d d (No model.)

lengthwise between them. The notch fand pin F prevent the plate C from turning upon the shaft. When the nut E is loosened the crank-head can be moved lengthwise, so as to adjust the length of the crank. 45

The plate C may be provided with lugs o c', if desired, as seen in Fig. 4, but they are not necessary.

It is not essential that the two plates C and D both have flanges, and the plate C may be 5o omitted if the back ofthe crankhead is notched to t onto the pin F, but if this is done the crank cannot be as minutely adjusted.

When constructed as shown in Fig. l the device is very perfect in its operation. 5 5

I am aware that a crank-head having alongitudinal slot and depressions on its back which are adapted to fit over a pin in the crank-shaft to which the cran k-head is clamped by means of a nut is old, and therefore make 6o no claim to such a combination; but

What I claim as new is- 1. The combination, with a crank having a longitudinally-slotted head, ot' a shaft provided With a pin for supporting the crank- 65 head, a plate, D, and aclamping-nut, E, on the i end of the shaft, for the purpose set forth.

2. 'Ihe combination, with the shaft A, pin F, and slotted crank-head B', of the flanged plates C Vand D and clamp-nut E, said plate 7o C having a groove,f, all substantially as and for the purposes set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 20th day ot' April, 1882.

CHARLES H. MILLER.

Witnesses:

J No. K. HALLocK, O. SEVALLEY. 

